baber/WOPTO huggingface dataset:
Patent GB-1074271-A (GB)
Title: Improvements in or relating to pulp molding
IPC: D21J5/00
Filed: 1965-04-28
Abstract: 1,074,271. Pulp moulding. B-E. BARTRUM. April 28, 1965, No. 17844/65. Heading B5A. Moulded pulp articles are formed as part of a continuous web. An endless conveyer (13) made up of porous sections is entrained around rotatable drums (15a, 15b, 15c) which dip into vats (19a, 19b, 19c) containing pulp stock. A porous fabric of, e.g. Fourdrinier wire, covers the conveyer sections and porous dies (23) overly the fabric. As the drums rotate the dies are carried through the stock in each of the three vats and pulp is drawn on to the dies and fabric by suction connected to the drums, whereby a continuous 3-ply pulp web incorporating moulded pulp articles is formed. This is then conveyed over a vacuum plate (63), and possibly pressed by rolls (66) to remove moisture, and then to through drying means to the cutting means where the individual articles are severed from the web. The web may be lifted from the porous fabric by compressed air.
Patent GB-1462277-A (GB)
Title: Method and apparatus for sulphuric acid aerosol analysis
IPC: G01N33/00
Filed: 1974-04-24
Abstract: 1462277 Sulphuric acid aerosol analysis CABOT CORP 24 April 1974 [27 April 1973] 17852/74 Heading G1B The sulphuric acid aerosol content of a sample gas e.g. polluted air masses such as ambient air is determined by (1) conducting a known quantity of a sample gas through a porous filter medium to collect sulphuric acid aerosol from the sample gas while allowing gaseous components therein to pass therethrough; (2) volatilizing the collected sulphuric acid aerosol by passing a dry inert purge gas stream having a water content of less than 1,000 parts per million and a temperature of less than 250‹C through the porous filter medium; (3) quantitatively analyzing the sulphuric acid containing purge gas resulting from (2) for sulphur by flame photometric analysis thereof. The gas stream formed in (2) may be heated to and maintained at above the condensation temperature of the sulphuric acid vapours contained therein. The relative humidity of the sample gas stream may be reduced to below 100% by heating to below 110‹C prior to the contact thereof with the porous filter medium. The sample gas is preferably heated by mixing thereof with heated dry inert purge gas. The dry inert purge gas may comprise an effective amount of an inert wetting agent having a wetting affinity for the porous filter medium greater than that of sulphuric acid aerosol, e.g. a C 1-6  primary alcohol such as methanol and/or ethanol. The dry inert purge gas may be air essentially free of sulphurous contaminants and it may have a water content of less than 10 parts per million by volume. Apparatus for determining the sulphuric acid aerosol content of a sample gas comprises: a filter holder 10 adapted to hold a porous filter medium 12 therein and to convey an exposed portion of filter medium held therein between a first sampling station and at least one other station defining a filter purging station; a porous filter medium held in the filter holder to collect sulphuric acid aerosol from a sample gas stream passing therethrough; means 9 to convey a known quantity of a sample gas to the sampling station and through the porous filter medium; means 62 or 66 to convey a purge gas through the filter medium at the filter purging station; flame photometric detector means 50 adapted to quantitatively analyze for sulphur, and means 44 to convey filtered purge gas from the filter purging station into the flame photometric detector means.
Patent GB-674042-A (GB)
Title: Improvements in or relating to electric welding apparatus
IPC: B23K11/24
Filed: 1948-07-02
Abstract: 674,042. Converting. SCIAKY, D. July 2, 1948, No. 17901/48. Class 38 (ii). A welding load 10 is supplied from the secondary of a transformer 18 the primary of which is fed with single-phase current or unidirectional current pulses from three-phase source 23 through ignitrons connected in antiparallel pairs 32, 34; 37, 38; 43, 44; one pair to each phase. Switches A3, A4, A5 are closed simultaneously, and during the half-waves when the anodes of ignitrons 32, 37, 43 are positive these are fired by valves 50 becoming conducting and transformer 18 receives unidirectional current. When these switches are opened and switches B3, B4, B5 are closed, valves 52 conduct and fire ignitrons 34, 38, 44 and the current in transformer 18 is reversed. Fig. 3 shows an arrangement for automatically and continuously reversing the load current which thus becomes lowfrequency A.C. Upon closing switch 107 relay E is energized from source L1, L2, El, E2 close and relay B is energized with D.C. from rectifier 108 through E2, C2, A2. Switches B3, B4, B5 close and current flows to the load as described, relay C connected across the load is energized, C2 opens and C1 closes. As B1, B2 have opened and closed respectively, relays A and B remain unenergized and energized respectively until time delay relay G is energized, when Gl, G2 open and relay B is de-energized. When the load volts have dropped to zero, D1, D2, which are closed during load by coil D, open, G is de-energized and the cycle recommences, but this time relay A is energized to operate switches A3, A4, A5. The duration of each half-wave of load current is determined by the value of variable resistance 110, which, with condenser 111 controls the rate of energization of relay G. Fig. 4 shows a modification in which the ignitrons are divided into two groups 128, 228 fed from separate transformers 117, 217. The ignitrons are fired through thyratrons 135, 235 which have grids each fed from three peaking transformers such as 138, 140, 141. These transformers are fed from the supply across the ignitron through brushes bearing on cams 151, which each have a conducting segment, through shaft 150 and cams 155, 255. As the shaft is rotated by motor 148, transformers 138, 140, 141 are energized one after the other and as the peaks come late (relative to the main supply) in the first and last transformers and early in the middle one, the load current waveform is peaked, having low values at beginning and end to give heating before and after the weld. The phase of the peaks is variable by the condenser resistance arrangements such as 144. A relay arrangement is described for operating clutch 156 between motor 148 and shaft 150, whereby when switch 165 is closed, depression of foot-switch 157 sends one unidirection pulse through the weld, and when switch 165 is open the load current is l.f. A.C.
Patent GB-259659-A (GB)
Title: Improvements in resonator boxes for telephones and like appliances
IPC: H04R7/06
Filed: 1925-07-13
Abstract: 259,659. Barnard, H. O. July 13, 1925. Loud-speakers; magnetic instruments. - A resonator box for telephone and like appliances comprises an upper plate with one or more apertures, a lower and coaxial plate connected therewith, means whereby the upper plate is caused to vibrate synchronously with a diaphragm or diaphragms of the associated telephone, and means comprising a sound post of small cross-sectional area and with rounded or pointed ends whereby the vibrations of the upper plate are re-transmitted to the lower plate, so as to set up vibrations in the air enclosed within the box. The resonator box shown is of rectangular shape with the upper or outer plate 1 and the lower or inner plate 2 of wood &c. and maintained in coaxial and spaced relation by a pair of stout wooden distance-pieces 3, 4 connected together by thin side-pieces 5, 6. One or more longitudinal apertures 7, 8 are provided in the upper plate 1, and the box is supported by means of legs 9 on a base-plate 10 carrying the telephone receiver 11. The member 13, by which the vibrations of the diaphragm are transmitted to the upper plate 1 may be of thin wire but is preferably of fir or other suitable wood, and passes through a hole 2' in the plate 2. It is secured at one end by a thin wire 14 to the diaphragm 12 or vibrating member of the telephone, the other end being attached to a wire 15 which passes through a hole in the top plate 1 at a point preferably midway between the ends of the box and half way between the axis 16 and one of the apertures 7, 8. A regulating nut 17 on the threaded wire 15 presses lightly upon the plate 1 through the intermediary of a leather &c. washer 18. A sound post 19 with pointed or rounded ends and placed preferably a little above or below the mid-length of the plate 1 retransmits the vibrations, to the bottom plate 2. Sound purifiers or correctors consisting of thin plates 22 of wood, metal, &c. and of rectangular, circular or oval shape or of the shape shown in Fig. 4 and tuned to the natural vibration or harmonics of the diaphragm 12 may be mounted on the bar 13 either outside or inside the box, or both. When used with wireless telephones, variable condensers of large capacity are arranged in parallel with the telephones. When the box is associated with more than one telephone, these should be arranged below points in the upper plate lying on extensions of the larger axes of the apertures 7, 8, as at 23, 24, Fig. 2, and when a single telephone is used, it may be placed in the exact centre of the box and the vibrations communicated to the upper plate by means of a light bridge 25, Fig. 5, of dense wood and having its legs pointed and rounded so as to touch the plate at two points only.
Patent GB-613268-A (GB)
Title: Improvements in manually adjustable knobs particularly for radio tuning mechanisms
IPC: G05G1/10
Filed: 1946-06-14
Abstract: 613,268. Hand cranks. AIRCRAFT RADIO CORPORATION. June 14, 1946, No. 17921. Convention date, Jan. 4. [Class 136 (ii)] [Also in Group XL (c)] A manually driven knob 11 attachable by sleeve 12 to a rotatable spindle has a crank handle 18 yieldingly held within a cylindrical hole in the knob, Fig. 4, so that it can be withdrawn axially for use, Fig. 5. The crank handle comprises a sleeve 18 rotatable on a pin 14 fixed to the bush 17. Grooves 20 and 19 in the sleeve'and bush respectively are engaged by balls 21 to hold the handle in position.
Patent GB-719385-A (GB)
Title: Improvements relating to mechanical interlocks between electrical switchgear and thecasing of electrical equipment controlled thereby
Inventor: HUNT JOSEPH JAMES HOLMES
IPC: H01H9/10
Filed: 1951-07-28
Abstract: 719,385. Switch covers. SIMPLEX ELECTRIC CO., Ltd. July 25, 1952 [July 28, 1951], No. 17926/51. Class 38(5) In an assembly in which a switch and fuse are housed in separate compartments 10, 11, access to the fuse compartment 11 being dependent on the switch being, open, the cover 16 of compartment 11 has an arcuate rib 35, and the switch cover 15 has a sleeve-bearing 20, through which the spindle 19 passes to the switch lever 18. The latter has a side flange 28 and is shaped to move in an arcuate path. close to the rib 35 when the switch is opened. The covers 15, 16 hinge about the axis 34-34 so that if an attempt is made to open 16 when the lever 18 is in the on ' position, the rib 35 interacts with the end of the lever 18 to prevent it. At the extreme 'off' position the end 37 of the rib engages the raised central portion 38 of the lever when the lid 16 is raised, thus preventing closure of the switch. As shown, the switch 13 is operated by a tumbler dolly 17 lying between the forked end 21 of a resilient lever 22 keyed to the spindle 19, the arrangement being that the resilience of lever 22 maintains pressure on the lever 17 to retain it in the ` off ' position.
Patent GB-1414291-A (GB)
Title: Moulding deeply profiled articles
IPC: B29C31/00
Filed: 1973-01-29
Abstract: 1414291 Moulding deeply profiled articles PRECISION FLEXMOLD Inc 29 Jan 1973 [31 Jan 1972] 17963/75 Divided out of 1412062 Heading B5A A deeply profiled casting A formed in a correspondingly shaped cavity in a mould 27 composed of a self-supporting block of elastomeric material is released therefrom by applying pressure between the mould and casting which elastically distends the mould. The mould may be punctured at 30 after filling with casting material whereby air may be forced into the mould by a pump 29.
Patent GB-596020-A (GB)
Title: Improvements in or relating to flexible rubber couplings
IPC: F16D3/74
Filed: 1945-07-13
Abstract: 596,020. Flexible couplings. ALLWOOD, F. F. July 13, 1945, No. 17996. [Class 80(ii)] In a flexible coupling between two metal discs 12, 13 comprising a rubber ring 11 of the same external diameter bonded to the discs, and having recesses 14 for accommodating the heads of the bolts connecting the coupling to the driving and driven members, additional recesses 16 are formed in the walls of the recesses 14 to obviate fatigue failure commencing at these recesses. The recesses 16 may be extended over the whole of the periphery of the rubber ring.
Patent GB-701942-A (GB)
Title: Improvements in or relating to automatic feeding devices for extrusion presses
IPC: B65G47/14
Filed: 1951-07-31
Abstract: 701,942. Feeding articles in predetermined attitude. SCHULER AKT.-GES., L. July 31, 1951 [Aug. 30, 1950], No. 18116/51. Class 117 [Also in Groups XXII and XXX] An automatic device for feeding circular arched or flat blanks 17 to extrusion presses from a drum in which they are disposed haphazardly includes a guide passage 6 down which they roll on edge to a guide angle piece 8, 25, Figs. 4, 5, which is so shaped that arched blanks pass out of it into the flat position with the convex side downwards, the blanks either slipping off an inclined edge surface of the part 8, Fig. 4, or tipping off the upper surface of this limb, Fig. 5, into the path of a slide 9 on the press table for conveyance to the die. Stops 21, 22, Fig. 6, depending into the guide 6 release the blanks 17 one at a time. These stops are pivoted to the ends of a rocking lever 20, on the pivotal axis 23 of which is mounted an arm 24 to cooperate with stops 26, 27 mounted on the slide 9.
Patent GB-530409-A (GB)
Title: Improvements in or relating to television transmitting tubes
IPC: H01J31/34
Filed: 1939-06-22
Abstract: 530,409. Cathode-ray tubes. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. June 22, 1939, No. 18254. Convention date, July 30, 1938. [Class 39 (i)] In television transmitting tubes utilizing low velocity electron beams for scanning a mosaic target, the electron beam deflecting system is such that the electrons not reaching the target are returned along different paths to a collecting electrode in front of the electron gun. The tube shown in Fig. 1, comprises a gun consisting of an indirectly heated cathode 3, a control electrode 4 and first and second anodes 5, 6. The screen 2 consists of a transparent insulating plate 8 with a backing signal plate 9 and a photo-electric mosaic surface 10. A concentrating coil 13 surrounds the tube throughout its length, and the beam deflection means for scanning the screen comprises a pair of electrostatic plates 14 and a pair of magnetic coils 15. After deflection by the plates 14, the electron beam is returned parallel to its path before deflection, and in the case of a low velocity electron beam, the electrons returning from the screen take a different path from their outward traverse and are caught up by an apertured electrode 16 disposed between the gun and the deflection plates. A second pair of electrostatic plates at right angles to the first may be used instead of the deflecting coils. The signals may be taken off the plate 9, or the electrode 16 and may be amplified by an electron multiplier consisting of a series of mesh plates of secondary electron emissive material and a collecting electrode (Fig. 3, not shown). The photoelectric mosaic may be replaced by target electrodes of the photo-conductive or photo-resistive type.
Patent GB-972997-A (GB)
Title: Process for separating articles from plastic foil and apparatus for carrying out the process
IPC: B29C51/24
Filed: 1961-05-19
Abstract: 972,997. Machinery guards. F. DRUMMER. May 19, 1961 [May 23, 1960], No. 18271/61. Heading F2J. [Also in Divisions B4 and B5] In an apparatus for cutting out articles from a plastic foil plate 11 (see Divisions B4 and B5), a pair of safety devices for the operator each comprise a flap 42 which, upon deflection out of the vertical position, operates a reversing switch in the motor circuit for driving a pair of rolls 18, 19 between which the plate 11, a cutter 13 and a backing plate 14 are fed, and a cover 43.
Patent GB-740282-A (GB)
Title: Improvements in or relating to thermally operated protective devices for polyphase circuits
IPC: H01H83/22
Filed: 1953-07-01
Abstract: 740,282. Thermal switches; protective cut-out arrangements. TELEMECANIQUE ELECTRIQUE. July 1, 1953 [July 18, 1952], No. 18273/53. Class 38(5) A thermal device for protecting a polyphase circuit comprises a number of thermal elements, one per phase, acting on a common switch control member, in the event of overloading or failure or underloading of one or more, but not all, phases, by means of levers pivoted to the elements. As shown applied to a threephase system, bimetal elements B1, B2, B3 are secured at points S1, E1 &c. and are heated by current through them or by surrounding coils. Each of the elements B1, B3 carries a lever L1 or L3 which rests on an insulating strip T2 secured to the central strip B2. Similarly, the latter carries levers L2, L<SP>1</SP>2 bearing respectively on strips T1, T2 attached to elements B1 B3. On a balanced overload, all of the elements deflect upwards and tilt a plate 2 about pivots 4 to separate control contacts 6, 7. If one phase fails, the corresponding element, e.g. B1 bends downwards causing lever L1 to pivot on strip T2 about a projection A1, raising plate 2 and opening the contacts. If the centre phase fails, element B2 deflects downwards and levers L2 and L'2 raise plate 2.
Patent GB-739206-A (GB)
Title: Improvements in or relating to coat hangers
Inventor: LAUGHTON MALCOLM
IPC: A47G25/40
Filed: 1953-07-02
Abstract: 739,206. Coat hangers. TWINCO, Ltd. July 2, 1954 [July 2, 1953], No. 18327/53. Class 52 (5). A coat hanger comprises mutually hinged shoulder parts 10, 11 foldable to bring brush members on the underside of each part side by side, the hinge pin 14 being extended to form a suspension hook 15 and being axially slidable to move a locking member 19, on the end of the pin remote from the hook, into or out of engagement with a recess 20 in the parts 10, 11, the recess being completed and engageable by the member 19, only when the parts 10, 11 are opened out to form a hanger. The parts 10, 11  are moulded units with beaded edges 17 and staggered hinge elements 12, 13 on one face and one part may be provided with a projecting lug engaging between the beaded edges of the other part when the parts are folded to form a brush. According to the Provisional Specification, a second recess is provided to co-operate with the member 19 to lock the parts in the folded position.
Patent GB-343448-A (GB)
Title: Improvements in printing mechanism for use with calculating and like machines
IPC: B41J7/02
Filed: 1929-08-14
Abstract: 343,448. Typewriters &c. BALL, W., Park House, Stanley Park Road, Walling- ton, Surrey, POWER, R. F., 18, Chesterford Gardens, Hampstead, and SIMSON, D. P., Empire House, King Street, Baker Street, both in London. Aug. 14, 1929, No. 18396. [Class 100 (iv).] Type-bar actions; aligning for impression; hammerimpression arrangements.-In a calculating or like machine, the type-bars under spring pressure are permitted to move gradually to impress the paper. The type bars 240, Fig. 6, are removably connected to spring-controlled levers 84 controlled by one arm 82 of the lever 70 differentiallypositioned under the key-control. Each type-bar is stamped from sheet metal and is slotted to receive a guide-pin 247, Fig. 2, carried by a spring-controlled lever 248c, Fig. 12, pivoted at 248b on a spring-controlled bell crank 251 and connected at 248e with a similar bell crank 248. As the machine is given its forward stroke the bail 261 gradually releases the bell cranks, the arrangement being such that the pin 247 moves a serrated edge of the type-bar against an aligning-pin 254 carried by the bell crank 251, and then the two bell-cranks advance the type-bar against the paper. The impression-hammers 251, Figs. 2 and 12, are hooked at 309 to be engaged by catches 270 pivoted on a rod 307 and spring-connected to bails 313. When a type-bar rises the bail ascends and by means of a turned-over lug 314 raises the catch tc unhook the corresponding hammer. Automatic release of hammers to the right is ensured by an extension 315 from each catch overlapping the next higher catch.
Patent GB-169042-A (GB)
Title: Improvements in or connected with means for feeding goods into and removing goods from annealing and other furnaces
IPC: F27D3/12
Filed: 1920-07-05
Abstract: 169,042. Gibbons Bros., Ltd., and Marle, M. van. July 5, 1920. Addition to 116,949. Charging and discharging.- The means described in the parent Specification for raising and lowering the goods-carrying bars are modified. As shown, the travelling frame 5, which runs on rails on the main carriage, is provided with blocks having inclined and horizontal surfaces 7, 8, and goods-carrying bars 9 have rollers supported thereon. Alternatively, the blocks may be on the bars 9 and the rollers on the framework 5. The bars 9 are moved endways by eccentrics 16 rotated through worm gearing from a hand-wheel 21, the worm 19 being 'free to move along the squared shaft 20. The side bars of the framework 5 are guided by rollers 23 on the main carriage.
Patent GB-561815-A (GB)
Title: Improvements relating to steam generator and other furnaces
IPC: F23M5/08
Filed: 1942-12-31
Abstract: 561,815. Furnace walls, roofs &c. BENNIS COMBUSTION, Ltd., and BENNIS, A. W. Dec. 31, 1942, No. 18574. [Class 51 (i)] Furnace walls, roofs, arches etc. comprise fluid cooled tubes A, Figs. 2 and 3, having fins C thereon formed in sections and adapted to engage with and retain in position on the furnace side of the tubes refractory blocks D. The blocks have curved sides to fit the tubes and recesses formed in the curved sides to engage the fins. The spaces E between the fin sections are wide enough to permit insertion of the blocks but are bridged by a pair of blocks when the refractory lining is in position. Fig. 4 shows a portion of an arch having fluid cooled tubes A with fin sections C supporting blocks E. The fins are broken transversely in the curved portions of the tubes to permit free expansion of the tubes. Specification 561,814 is referred to.
Patent GB-894998-A (GB)
Title: Improvements in or relating to a method and machinery for pressing stiffening rings on spinning bobbins
IPC: B65H75/18
Filed: 1960-05-26
Abstract: 894,998. Making bobbins; end-capping tubes. BROUWER, M., and HELMING, J. B. May 26, 1960, No. 18624/60. Classes 83 (2) and 83 (4). A stiffening ring is fitted on each end of a hollow bobbin by compressing the ring around the end of the bobbin by die means having a compressible aperture and inserting a mandrel into the end to fold the ring over internally. A stiffening ring 33, Fig. 3, is compressed around the end of a bobbin 1 by a radially slitted resilient end 31 of a die sleeve 12 closed upon axial movement of a pressure ring 28 on a die holder 3 moved by a shaft 8. A mandrel 21 is also moved into the end of the bobbin 1, by the shaft 8, to fold and press the ring 33 against the inner wall of the bobbin end. A bobbin 1 is released from a supply chamber 51 by a reciprocated plate 52 to fall into a V- shaped centring gulley 34. The shaft 8 is moved forwards by a cam 10 to push the holder 3 and thus the bobbin 1 towards a die holder 4 at the other end of the bobbin. This action causes the die means 4 first to fit a stiffening ring 33 on that end of the bobbin and then the die means 3 to fit a stiffening ring 33 on its end of the bobbin. The bobbin 1 is then released and falls between the sides of the V gulley 34, which sides have been moved away from one another. A modified die means is described with reference to Fig. 7 (not shown).